XML 79 R57.htm IDEA: XBRL DOCUMENT
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Fair Value (Nonrecurring Measurements) (Details) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2018 USD ($) | Sep. 30, 2017 USD ($) | Sep. 30, 2018 USD ($) | Sep. 30, 2017 USD ($) | Jun. 30, 2018 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Asset Impairment Charges |  |  |  | $ 172 | $ 260 |
Other Asset Impairment Charges |  | $ 74 | $ 2 | 166 | 260 |
IPL Subsidiary [Member] | Level 3 [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Asset Retirement Obligation |  | 53 |  | 53 |  |
Long Lived Assets Held And Used [Member] | DPL Subsidiary [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Other Asset Impairment Charges | [1] |  |  |  | 66 |
Long Lived Assets Held And Used [Member] | DPL Subsidiary [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Other Asset Impairment Charges | [1] |  |  | 156 |  |
Long Lived Assets Held And Used [Member] | Other Subsidiaries [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Other Asset Impairment Charges | [1] |  |  |  | 8 |
Long Lived Assets Held And Used [Member] | Kazakhstan Hydro [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Other Asset Impairment Charges | [1] |  |  |  | 92 |
Long Lived Assets Held And Used [Member] | Kazakhstan [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Other Asset Impairment Charges | [1] |  |  |  | 94 |
Equity Method Investments [Member] | Elsta [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Other Asset Impairment Charges | [1] |  |  | 5 |  |
Fair Value, Measurements, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | DPL Subsidiary [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value, Nonrecurring |  | 55 |  | 55 |  | $ 127
Fair Value, Measurements, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Fair Value [Member] | DPL Subsidiary [Member] | Level 1 [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value, Nonrecurring | [1] |  | 0 |  | 0 |
Fair Value, Measurements, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Fair Value [Member] | DPL Subsidiary [Member] | Level 2 [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value, Nonrecurring | [1] |  | 0 |  | 0 |
Fair Value, Measurements, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Fair Value [Member] | DPL Subsidiary [Member] | Level 3 [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value, Nonrecurring | [1] |  | 11 |  | 11 |
Fair Value, Measurements, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Fair Value [Member] | DPL Subsidiary [Member] | Level 1 [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value, Nonrecurring | [1] | 0 |  | 0 |  |
Fair Value, Measurements, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Fair Value [Member] | DPL Subsidiary [Member] | Level 2 [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value, Nonrecurring | [1] | 0 |  | 0 |  |
Fair Value, Measurements, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Fair Value [Member] | DPL Subsidiary [Member] | Level 3 [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value, Nonrecurring | [1] | 33 |  | 33 |  |
Fair Value, Measurements, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Fair Value [Member] | Other Subsidiaries [Member] | Level 1 [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value, Nonrecurring | [1] |  | 0 |  | 0 |
Fair Value, Measurements, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Fair Value [Member] | Other Subsidiaries [Member] | Level 2 [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value, Nonrecurring | [1] |  | 0 |  | 0 |
Fair Value, Measurements, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Fair Value [Member] | Other Subsidiaries [Member] | Level 3 [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value, Nonrecurring | [1] |  | 7 |  | 7 |
Fair Value, Measurements, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Fair Value [Member] | Kazakhstan Hydro [Member] | Level 1 [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value, Nonrecurring | [1] |  | 0 |  | 0 |
Fair Value, Measurements, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Fair Value [Member] | Kazakhstan Hydro [Member] | Level 2 [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value, Nonrecurring | [1] |  | 92 |  | 92 |
Fair Value, Measurements, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Fair Value [Member] | Kazakhstan Hydro [Member] | Level 3 [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value, Nonrecurring | [1] |  | 0 |  | 0 |
Fair Value, Measurements, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Fair Value [Member] | Kazakhstan [Member] | Level 1 [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value, Nonrecurring | [1] |  | 0 |  | 0 |
Fair Value, Measurements, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Fair Value [Member] | Kazakhstan [Member] | Level 2 [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value, Nonrecurring | [1] |  | 29 |  | 29 |
Fair Value, Measurements, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Fair Value [Member] | Kazakhstan [Member] | Level 3 [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value, Nonrecurring | [1] |  | 0 |  | 0 |
Fair Value, Measurements, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Carrying Amount [Member] | DPL Subsidiary [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value, Nonrecurring | [1],[2] |  | 77 |  | 77 |
Fair Value, Measurements, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Carrying Amount [Member] | DPL Subsidiary [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value, Nonrecurring | [1],[2] | 185 |  | 185 |  |
Fair Value, Measurements, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Carrying Amount [Member] | Other Subsidiaries [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value, Nonrecurring | [1],[2] |  | 15 |  | 15 |
Fair Value, Measurements, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Carrying Amount [Member] | Kazakhstan Hydro [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value, Nonrecurring | [1],[2] |  | 190 |  | 190 |
Fair Value, Measurements, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Carrying Amount [Member] | Kazakhstan [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value, Nonrecurring | [1],[2] |  | $ 171 |  | $ 171 |
Fair Value, Measurements, Nonrecurring [Member] | Equity Method Investments [Member] | Fair Value [Member] | Elsta [Member] | Level 1 [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value, Nonrecurring | [1] | 0 |  | 0 |  |
Fair Value, Measurements, Nonrecurring [Member] | Equity Method Investments [Member] | Fair Value [Member] | Elsta [Member] | Level 2 [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value, Nonrecurring | [1] | 16 |  | 16 |  |
Fair Value, Measurements, Nonrecurring [Member] | Equity Method Investments [Member] | Fair Value [Member] | Elsta [Member] | Level 3 [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value, Nonrecurring | [1] | 0 |  | 0 |  |
Fair Value, Measurements, Nonrecurring [Member] | Equity Method Investments [Member] | Carrying Amount [Member] | Elsta [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value, Nonrecurring | [1],[2] | $ 21 |  | $ 21 |  |
Measurement Input, Long-term Revenue Growth Rate [Member] | Long Lived Assets Held And Used [Member] | Valuation, Income Approach [Member] | Weighted Average [Member] | DPL Subsidiary [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring |  |  |  | (1.50%) |  |
Measurement Input, Long-term Revenue Growth Rate [Member] | Long Lived Assets Held And Used [Member] | Valuation, Income Approach [Member] | Maximum [Member] | DPL Subsidiary [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring |  |  |  | (3.00%) |  |
Measurement Input, Long-term Revenue Growth Rate [Member] | Long Lived Assets Held And Used [Member] | Valuation, Income Approach [Member] | Minimum [Member] | DPL Subsidiary [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring |  |  |  | (1.00%) |  |
Measurement Input, Operating Margin [Member] | Long Lived Assets Held And Used [Member] | Valuation, Income Approach [Member] | Weighted Average [Member] | DPL Subsidiary [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring |  |  |  | 30.00% |  |
Measurement Input, Operating Margin [Member] | Long Lived Assets Held And Used [Member] | Valuation, Income Approach [Member] | Maximum [Member] | DPL Subsidiary [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring |  |  |  | 36.00% |  |
Measurement Input, Operating Margin [Member] | Long Lived Assets Held And Used [Member] | Valuation, Income Approach [Member] | Minimum [Member] | DPL Subsidiary [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring |  |  |  | 25.00% |  |
Measurement Input, Discount Rate [Member] | Long Lived Assets Held And Used [Member] | Valuation, Income Approach [Member] | Weighted Average [Member] | DPL Subsidiary [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring |  |  |  | 9.00% |  |
Interest Rate Contract [Member] | Measurement Input, Entity Credit Risk [Member] | Weighted Average [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring |  |  |  | 3.63% |  |
Interest Rate Contract [Member] | Measurement Input, Entity Credit Risk [Member] | Maximum [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring |  |  |  | 4.38% |  |
Interest Rate Contract [Member] | Measurement Input, Entity Credit Risk [Member] | Minimum [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring |  |  |  | 1.78% |  |
Argentina, Pesos | Foreign Exchange Contract [Member] | Weighted Average [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
U S Dollar Indexation In Argentina |  | 99.2 |  | 99.2 |  |
Argentina, Pesos | Foreign Exchange Contract [Member] | Maximum [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
U S Dollar Indexation In Argentina |  | 166.5 |  | 166.5 |  |
Argentina, Pesos | Foreign Exchange Contract [Member] | Minimum [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
U S Dollar Indexation In Argentina |  | 42.1 |  | 42.1 |  |
[1] | . (2) See Note 14—Asset Impairment Expense for further informatio
[2] | _ (1) Represents the carrying values at the dates of initial measurement, before fair value adjustmen

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